- added comparator test

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/cli/trunk@278885 13f79535-47bb-0310-9956-ffa450edef68

Author: John Keyes

src/test/org/apache/commons/cli2/util/HelpFormatterTest.java

@@ -21,6 +21,7 @@
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
@@ -168,6 +169,75 @@ public void testPrint() throws IOException {
         assertNull(reader.readLine());
     }
 
+    public void testComparator() throws IOException {
+        final StringWriter writer = new StringWriter();
+        final PrintWriter pw = new PrintWriter(writer);
+        helpFormatter.setPrintWriter(pw);
+        final Comparator comparator = new OptionComparator();
+        helpFormatter.setComparator(comparator);
+        helpFormatter.print();
+
+        // test comparator
+        assertEquals("invalid comparator", comparator, helpFormatter.getComparator());
+        final BufferedReader reader =
+            new BufferedReader(new StringReader(writer.toString()));
+        assertEquals(
+            "+------------------------------------------------------------------------------+",
+            reader.readLine());
+        assertEquals(
+            "|*Jakarta Commons CLI                                                         *|",
+            reader.readLine());
+        assertEquals(
+            "+------------------------------------------------------------------------------+",
+            reader.readLine());
+        assertEquals(
+            "|*Usage:                                                                      *|",
+            reader.readLine());
+        assertEquals(
+            "|*ant [--verbose --projecthelp --help --diagnostics] [<target1> [<target2>    *|",
+            reader.readLine());
+        assertEquals(
+            "|*...]]                                                                       *|",
+            reader.readLine());
+        assertEquals(
+            "+------------------------------------------------------------------------------+",
+            reader.readLine());
+        assertEquals(
+            "|*options              *-*                                                    *|",
+            reader.readLine());
+        assertEquals(
+            "|*  --verbose          *-*print the version information and exit              *|",
+            reader.readLine());
+        assertEquals(
+            "|*  --projecthelp      *-*print project help information                      *|",
+            reader.readLine());
+        assertEquals(
+            "|*  --help (-?,-h)     *-*Displays the help                                   *|",
+            reader.readLine());
+        assertEquals(
+            "|*  --diagnostics      *-*print information that might be helpful to diagnose *|",
+            reader.readLine());
+        assertEquals(
+            "|*                     *-*or report problems.                                 *|",
+            reader.readLine());
+        assertEquals(
+            "|*  target [target ...]*-*The targets ant should build                        *|",
+            reader.readLine());
+        assertEquals(
+            "+------------------------------------------------------------------------------+",
+            reader.readLine());
+        assertEquals(
+            "|*Copyright 2003                                                              *|",
+            reader.readLine());
+        assertEquals(
+            "|*Apache Software Foundation                                                  *|",
+            reader.readLine());
+        assertEquals(
+            "+------------------------------------------------------------------------------+",
+            reader.readLine());
+        assertNull(reader.readLine());
+    }
+
     public void testPrintHelp() throws IOException {
         final StringWriter writer = new StringWriter();
         helpFormatter.setPrintWriter(new PrintWriter(writer));
@@ -530,3 +600,13 @@ public void testGutters() throws IOException {
         assertNull(reader.readLine());
     }
 }
+
+
+class OptionComparator implements Comparator {
+
+    public int compare(Object o1, Object o2) {
+        Option opt1 = (Option) o1;
+        Option opt2 = (Option) o2;
+        return -opt1.getPreferredName().compareTo(opt2.getPreferredName());
+    }
+}